Dartnall, Herbert J. A. <br/><br/>
The visual pigments / 
Herbert J. A. Dartnall 
 - London ;  New York ;  Methuen :  Wiley,  1957 
 - 216 p. :  illus. ;  23 cm. 
<br/><br/>Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Visual pigments.
<br/><br/><label>Dewey Class. No.: </label>612.8425  / DAV 1957